You'll see the daisy-like mayweed (a member of the sunflower family) along the roadsides (map) on Assateague in may areas. Mayweed can grow up to two feet in height; the flowers grow up to about an inch across, and the fern-like leaves may be over two inches in length. (The photos were taken in mid-May.)

On Assateague, mayweed blooms in May as the name implies (as late as June in northern parts of America). The fern-like leaves of the mayweed distinguish it from the oxeye daisy which has toothed leaves.